A triathlon is a big race. 

A triathlon is a big race. 
You do three parts in a row. First you swim in the water. Next you ride a bike. Last you run. 
People train to be fast and strong. They work hard to finish the race. It is a very big test of strength.
Some races are very long. One man even did a race that was very far.
Do you like to move fast?
A triathlon is a big race with three parts. 
Early races were very different. In 1901, a race in France used a run, a bike, and a canoe. Later, the canoe part became a swim. The modern sport began in California in 1974. Two men, Jack Johnstone and Don Shanahan, helped start it. 
Today, many people love this sport. They train to be strong and fast. Some races are very long. There is a famous race called the Ironman in Hawaii. The sport is now in the Olympic Games. It is a huge test of what a person can do. People all over the world join in the fun.
A triathlon is a big race made of three different sports. 
To prepare, triathletes work on many different skills. They train for endurance, strength, and speed. This means they do specific workouts for each part. They also do combination workouts to get ready. Some athletes use special gear like a speedsuit to go faster. 
Long ago, people held races with three parts in France. One early event in 1901 was called "Les Trois Sports." 

The modern version began in San Diego, California. 
Today, the sport is famous all over the world. The Ironman is a very well-known long race in Hawaii. Many people want to race in the Olympic Games. Triathlon became an Olympic sport in the year 2000. The games were held in Sydney, Australia. Now, groups like World Triathlon help run big races everywhere. People of all ages can join in the challenge.
A triathlon is an endurance multisport race. It consists of swimming, cycling, and running over various distances. 
To succeed, triathletes must follow a periodised training plan. This involves organized cycles of training to build specific skills. They must develop endurance, strength, and speed. Athletes perform workouts for each individual discipline. They also perform combination workouts to prepare for the transitions. General strength conditioning is also necessary. Some athletes use specialized gear, such as a speedsuit, to improve their performance. 
Tracing the exact origins of triathlon is difficult. Some historians, like Scott Tinley, look to early 20th-century France. The earliest recorded event was in 1901 in Joinville-le-Pont. It was called "Les Trois Sports," which means "The Three Sports." 
The modern version of the sport began in Southern California. On September 25, 1974, the Mission Bay Triathlon was held in San Diego. Jack Johnstone and Don Shanahan organized this event. 
Triathlon spread to Europe in the 1980s. The first European event was in Plzeň, Czechoslovakia, in 1980. In 1982, the organizer IMG created a new event in Nice, France. 
International organizations eventually formed to govern the sport. The European Triathlon Union (ETU) was created in 1985. In 1989, the International Triathlon Union (ITU) was founded. The ITU's primary goal was to reach the Olympic Games. 
There are different types of racing organizations today. The World Triathlon Corporation (WTC) is a private company. They organize the Ironman and Ironman 70.3 races. The Ironman World Championship is held annually in Kailua-Kona, Hawaii. Other groups like the International Ultra-Triathlon Association (IUTA) govern ultratriathlon. These races involve distances longer than a standard iron-distance race. The sport continues to grow through various brands and local clubs.
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